Embossing and like press



April 14, 1931. w. H. BRECKNELL EMBOSSING AND LIKE PRESS FiledDec. 13,1929 wvnvro/r.

Patented Apr. 14, 1931 PATENT OFFICE WILLIAM HENRY BRECKNELL, FSOMERSET, ENGLAND EMBOSSING AND LIKE PRESS Application filed December13, 1929, Serial No. 413,828, and in Great Britain December 18, 1928.

This invention relates to presses such as are used for embossing.

According to the invention the pressing movement of the presser membertowards the bed member is effected by the aid of a beam pivotallyconnected to the presser member, the beam being given a combinedmovement of rotation and translation. This may conveniently be effectedby means of a main link pivoted to the beam at each end at a pointremote from its pivotal connection with the presser member, the otherend of the link being pivoted to the framework or bed of the press atsome point on the opposite side of the bed face to the presser memher,the three pivot .points being in line or nearly in line in the positionof maximum pressure. These main links and beam take all the reaction andrelieve the frame of the 2 press. The press may be actuated by a handlever adapted to effect the rotary movement of the beam. In practice itis convenient for the handle end of the lever to move in the oppositedirection to the beam. For this purpose the lever may be fulcrumed to apair of links or the like permitting the translatory movement and itslower end may be pivoted directly to the beam or to the main links.

A press according to the invention can be cheaply constructed by makingmost of its parts from standard stock materials.

One embodiment of the invention is illustrated by way of example in theaccompany ing drawings, in which Figure 1 is a side View of the presswith the presser memberin its uppermost position.

Figure 2 is a front view of Figure 1.

Figure 3 is a side view with the presser member in its lowest position.

The frame of the press comprises a pair of substantially L-shapedmembers 1, 2, conveniently of angle or T iron bent to shape 4 and crossconnected where necessary.

Across the frame at the angle of the L is mounted a bed member 3,conveniently a bar of rectangular sectioned steel. To each end of thebed is pivoted a main link 4; say of steel flat the ivots 5 in the examle illustrated being formed by turning the end of the bed member.Alternatively, a separate pivot pin may be inserted in a hole drilled ineach end of the bed member. In either case the pin preferably enters ahole in the frame member and is pinned or nutted thereto as at 6. Thepresser member 7 is a similar bar between a guide plate 8 secured acrossthe frame at the back and another guide plate 9 at the front. The plate9 is made narrow to permit the swinging movements of the main links l.Alternatively it may be cut away or notched to allow this move ment.

The main links a are pivoted at their upper ends to a cross beam 10which as shown is a bar of square section steel, but it may be of anysection with a V edge at the bottom. This bar bears with its angle or Vedge on the presser member 7 and relative sliding is prevented by pairsof pins 11 and 12 projecting from the presser member and co-acting withsuitably shaped recesses in the beam. The front pair of pins 11 areplaced out of line with the back pair 12 to prevent undue weakening ofthe beam by the recesses. It will be understood that the pins may besecured to the beam and the recesses provided in the presser member.

A hand lever 13 is pivoted near the end remote from the handle portion14 to a pair of short links 15 one on each side, themselves pivoted to across member 16 joining the main frame members 1, 2, near their upperends; or the member 16 may have journals passing through bearing blockssecured to the frame members. The end of the hand lever 13 is pivoted tothe upper edge of the beam 10; as shown it is forked and encloses an eyemember 17 bolted to the beam. Alternatively, the

beam may be recessed and a pivot pin passed through a hole drilledthrough the beam from end to end. In the latter case this same pin mayform the pivotal connections with the upper ends of the main links 4.

The presser member 7 is permanently urged upwardly by helical springs 18carried on pins 20 in the member 7' and bearing against fixed pins orlugs 19, 21, on the presser member and the guide plate respectively. Thesprings may instead be mounted at the back of the presser member anddifferently arranged springs may be used. For example, coil springshoused in recesseson each side of the presser member and/or bed, may beemployed. A further alternative is to use counterweights.

Since the precise distance of the presser member 7 from the bed 3 at theposition of.

m ximum compression shown in Figure 3 is in some cases rather critical,I prefer to provide a fine adjustment. This may take the form of aneccentric bush connection 22 between the bottom of each main link 4 andits pivot 5, suitable means such as a radial screw 23 in the link beingprovided to lock the bush. Where pivot pins separate from and insertedinto the bed member 3 are used, the portions working in the apertures inthe links may be eccentric to the bodies of the pins which are againprovided with suitable locking means such as radial setscrews in the bedmember. 'Alternatively, a wedge adjustment between the bed nember andplaten or on the under surface of the presser member, may be used.

For some purposes the horizontal parts of the frame members 1, 2, areshaped to form runners to carry a sliding platen of any known orconvenient pattern.

What I claim is 1. In a press for embossing and like purposes thecombination of a bed member, a presser member guided to move towards andfrom said bed member, a beam pivoted on a longitudinal axis to saidpresser member, actuating means and link mechanism for controlling thebeam to give it a combined movement of rotation and translation.

2. In apress for embossing and the like the combination of a framestructure, a presser member guided in said structure, a beam passingacross said presser member and pivoted on a longitudinal axis thereto, apair of links pivoted one to each end of said beam and to said framestructure and means for giving a rotary movement to said beam.

3. In a press for embossing and the like, the combination of a framestructure, a presser member guided in said structure, a beam pivoted onalongitudinal axis to said presser member, a pair of links pivoted tosaid beam and to said frame structure and means including a hand leverfor giving a rotary movement to said beam.

and said beam.

4. In a press for embossing and the like, the combination of a framestructure, a presser member guided in said structure, a beam pivoted ona longitudinal axis to said presser member, a pair of links pivoted tosaid beam and to said frame structure, means for adjusting the effectivelengths of said links, and means for giving a rotary move ment to saidbeam.

5. In a press for embossing or the like, the combination of a bedmember, a presser member guided towards and from said pressor member, abeam passing across said presser member and having a longitudinal angleedge in contact therewith, actuating means and link mechanism forcontrolling the beam to give it a combined movement of rotation andtranslation.

6. In a press for embossing or the like, the combination of a bedmember, a presser member guided towards and from said presser member, abeam pivoted on alongitudinal axis to said presser member, a pair oflinks pivoted at their upper ends to said beam, a pair of pivots on saidbed member, an eccentric bush rotatable on each of said pivots andsecured in the lower end of each of said links, and means for giving arotary motion to said beam.

7. In a press for embossing and the like, the combination of a framestructure, a presser member guided in said structure, a beam pivoted ona longitudinal axis to'said presser member, a pair of links pivoted tosaid beam and to said frame structure, a

hand lever pivoted to said beam, and a second pair of links pivoted tosaid lever and said frame.

8. In a press for embossing or the like, the combination of a bedmember, a presser member guided towards and from said presser member, abeam passing across said presser member and having a longitudinal angleedge in contact therewith, actuating means, link mechanism forcontrolling the beam to give it a combined movement of rotation andtranslation, and yielding means for maintaining contact between saidpresser member 9. A press for embossing and the like, comprising a pairof connected L-shaped frame members, a bed member secured to said framemembers, a presser member guided between said frame members towards andfrom said bed member, springs urging said presser member away from saidbed member, a transverse beam having an angular edgeforming a pivotalconnection with said presser member, a pair of links pivoted at theirupper ends to the ends of said beam and at their lower ends to the endsof said bed member, a hand lever pivoted to said beam, and a second pairof links pivoted to saidhand lever and to a member connecting said framemembers.

10. In a press for embossing and the like,

WILLIAM HENRY BREGKN ELL.

